What was found in ZIP 21842
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 618.15 µg/L 6.2% of the EPA limit 10000 µg/L Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2019
Highest in the ZIP: 752.65 µg/L — MYSTIC HARBOUR · 5,945 people · 2019 | 2/2 | SYR4 |
| Fluoride | 200 µg/L 5% of the EPA limit 4000 µg/L Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2018 | 2/2 | SYR4 |
| TTHM | 86.065 µg/L 108% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 31.14 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 2/2 | SYR4 |
| Bromodichloromethane | 27.225 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 2/2 | SYR4 |
| Barium | 24 µg/L 1.2% of the EPA limit 2000 µg/L Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 2/2 | SYR4 |
| Chloroform | 21.785 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 2/2 | SYR4 |
| Bromoform | 20.86 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 19.04 µg/L 32% of the EPA limit 60 µg/L Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 9.855 pCi/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2018
Highest in the ZIP: 10.4 pCi/L — MYSTIC HARBOUR · 5,945 people · 2014 | 2/2 | SYR4 |
| Lithium | 9.57 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2025 | 1/2 | UCMR-5 |
| Trichloroacetic Acid | 8.1 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 2/2 | SYR4 |
| Dichloroacetic Acid | 7.165 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 2/2 | SYR4 |
| Monochloroacetic Acid | 6.43 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 1/2 | SYR4 |
| Chromium | 6.18 µg/L 6.2% of the EPA limit 100 µg/L Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2018 | 2/2 | SYR4 |
| Dibromoacetic Acid | 6.14 µg/L No EPA limit set Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2015 | 2/2 | SYR4 |
| Cadmium | 4.9 µg/L 98% of the EPA limit 5 µg/L Highest in the ZIP: MYSTIC HARBOUR · 5,945 people · 2019 | 1/2 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Highest in the ZIP: MYSTIC HARBOUR · 5,945 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0028 mg/L 19% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF OCEAN CITY · 30,000 people · 2024 | 2/2 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 21842
| Supplier | State | Population served |
|---|---|---|
| TOWN OF OCEAN CITY | MD | 30,000 |
| MYSTIC HARBOUR | MD | 5,945 |
Frequently asked questions about ZIP 21842 tap water
Is the tap water in ZIP 21842 safe to drink?
EPA testing detected 19 contaminants across the water suppliers serving ZIP 21842. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 21842?
2 public water suppliers report EPA drinking-water monitoring for ZIP 21842. Each is listed above with its population served.
What contaminants are in ZIP 21842's water?
EPA monitoring detected Nitrate, Fluoride, TTHM, Dibromochloromethane, Bromodichloromethane, and others across this ZIP's suppliers. The full list with levels and sources is above.